Electric blower, electric vacuum cleaner and hand dryer

An electric blower comprising:

• an electric motor portion including a rotation shaft;
• a centrifugal impeller formed to surround at least a part of the rotation shaft;
• and
• a heat dissipating portion connecting the centrifugal impeller and the rotation shaft,
• the centrifugal impeller including a boss portion connected to the heat dissipating portion, and a plurality of rotor vanes connected to the boss portion,
• the boss portion being provided with a first hole extending along an extending direction of the rotation shaft,
• the heat dissipating portion including a first portion connected to an inner circumferential surface of the first hole, and at least one second portion connected to the first portion in the extending direction and located outside the first hole,
• a material for the heat dissipating portion having a thermal conductivity higher than that of a material for the centrifugal impeller,
• a length of the heat dissipating portion in the extending direction being longer than a length of the first hole in the extending direction,
• the electric blower comprising a fixing member fixed to a portion of the shaft located on a suction side of the at least one second portion.